v1.2.1 修复1-99年日期错乱的问题；增加单元测试。

__tests__/Holiday.test.js

@@ -0,0 +1,40 @@
+var {HolidayUtil} = require('../lunar');
+
+test('test1', () => {
+  expect(HolidayUtil.getHoliday('2020-01-01') + '').toBe('2020-01-01 元旦节 2020-01-01');
+  // 将2020-01-01修改为春节
+  HolidayUtil.fix('202001011120200101');
+  expect(HolidayUtil.getHoliday('2020-01-01') + '').toBe('2020-01-01 春节 2020-01-01');
+
+  // 追加2099-01-01为元旦节
+  HolidayUtil.fix('209901010120990101');
+  expect(HolidayUtil.getHoliday('2099-01-01') + '').toBe('2099-01-01 元旦节 2099-01-01');
+
+  // 将2020-01-01修改为春节，并追加2099-01-01为元旦节
+  HolidayUtil.fix('202001011120200101209901010120990101');
+  expect(HolidayUtil.getHoliday('2020-01-01') + '').toBe('2020-01-01 春节 2020-01-01');
+  expect(HolidayUtil.getHoliday('2099-01-01') + '').toBe('2099-01-01 元旦节 2099-01-01');
+
+  // 更改节假日名称
+  let names =   HolidayUtil.NAMES;
+  names[0] = '元旦';
+  names[1] = '大年初一';
+
+  HolidayUtil.fix(names, '');
+  expect(HolidayUtil.getHoliday('2020-01-01') + '').toBe('2020-01-01 大年初一 2020-01-01');
+  expect(HolidayUtil.getHoliday('2099-01-01') + '').toBe('2099-01-01 元旦 2099-01-01');
+
+  // 追加节假日名称和数据
+  names = [];
+  for (let i = 0, j =   HolidayUtil.NAMES.length; i < j; i++) {
+    names[i] =   HolidayUtil.NAMES[i];
+  }
+  names[9] = '我的生日';
+  names[10] = '结婚纪念日';
+  names[11] = '她的生日';
+
+  HolidayUtil.fix(names, '20210529912021052920211111:12021111120211201;120211201');
+  expect(HolidayUtil.getHoliday('2021-05-29') + '').toBe('2021-05-29 我的生日 2021-05-29');
+  expect(HolidayUtil.getHoliday('2021-11-11') + '').toBe('2021-11-11 结婚纪念日 2021-11-11');
+  expect(HolidayUtil.getHoliday('2021-12-01') + '').toBe('2021-12-01 她的生日 2021-12-01');
+});